I used to own one of those...
Unfortunately, all I remember is that you need to do some wierd voodoo with isapnptools but I can't really remember the specifics. I remember needing to run pnpdump and redirecting it into a file and then going through it, uncommenting AWE related stuff but thats about it. Bear in mind though, this was with Red Hat 5.2 and kernel 2.0.36, it may be (and probably is) completely different now.